| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the fitting/removing work of a snow pole by fixing a pair of upper and lower rings having the inner diameter allowing the insertion/ extraction of the snow pole to the stanchion of a protective fence. SOLUTION: A snow pole 9 for indicating a road edge section where snow is accumulated and rings 10 for supporting the pole 9 in parallel with the stanchion 7 of a protective fence are provided. The rings 10 have the inner diameter allowing the insertion/extraction of the pole 9, and an interval member welded with multiple rod bodies and ball bodies is provided on the inner face of each ring 10 to prevent the backlash of the pole 9 in the ring 10. At the time of execution, one end of a flat steel plate 11 is welded to the stanchion 7, the other end is welded to the ring 10, and a pair of rings 10 are fixed to the stanchion 7 at a vertical interval. The pole 9 is inserted into the rings 10 from above the rings 10 until its bottom section is brought into contact with the road surface, and it is supported vertically. The pole 9 is extracted from the rings 10 out of season when the pole 9 is not required. The snow pole 9 can be easily fitted to or removed from the protective fence. |
